diff --git a/util/.gitignore b/util/.gitignore
index 40e8248dd..16aa98136 100644
--- a/util/.gitignore
+++ b/util/.gitignore
@@ -27,4 +27,5 @@ readtags
 heaputil
 heaputil.c
 tilemappings.lst
+clang_rt.asan*.dll